(19)

(11)

EP 4 454 326 A1

(12)

(43) Date of publication: 30.10.2024 Bulletin 2024/44 (21) Application number: 21968424.8 (22) Date of filing: 20.12.2021

(51) International Patent Classification (IPC):  H04W 24/10(2009.01) H04B 7/185(2006.01) (52) Cooperative Patent Classification (CPC): H04W 24/10; H04W 24/02; H04B 7/18506 (86) International application number: PCT/CN2021/139744 (87) International publication number: WO 2023/115268 (29.06.2023 Gazette 2023/26)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: NEC Corporation 108-8001 Tokyo (JP)	(72) Inventor: WANG, Gang Beijing 100600 (CN) (74) Representative: Mathys & Squire  The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)